Lock for window sash



Feb. 17. l 925.

G. F. VAN METER LOCK FOR WINDOW SASH I K ATTORNEYS Filed Oct. 1922GEORGEFRIQNKIEENVKN METER, F INDIANAPOLIS, "INDIANA.

LOCK TOR WINDOW SAS'H.

Application-medhotelier-23, 1922. Serial No. 596,216.

To .alt ctr/tom it mcay concern Be .it known that 'rI,--.G.EORGE FRANLIN NAN ,Mn'rra, a-citizeniof-the lln tedlgt ite and resident ofIndianapolis, county of Marion, and State of Indiana, ihavesinventedacertain new and usefuloLQQk forWindow :Sas'h; and 1 .do hereby .declarekthat .rflle bfOllQWiIlg is .a full, clear, and ex ct descriptionthereof, reference-being hadto the accompanying drawings, All which thkenumerals;meter to alike pa ts.

. llOGl.. The chief .objeet ,of this invention Ilhiswinvention relatestoay-window sash window prevents, "to .a considerable degree,

swayingof the window in :thecasing,

The chief feature of *the, invention in .ob-

taining complete 5 security when it is desired torhave windows ofttheguillotinetypeopen either at the .top or at theflbottoln, or .at

both the topand the bottom. vThe Jock when attached :to the windowssecures the same together in the adjusted position and is onlyreleasable from .the inside of the avindow by simply ,releasingthelatch.

The full nature.oftIiis'invention will be understood from theaccompanying drawings and the following description and claim.

In the drawings Fig. 1 is a sideielevation- :11 view oftthe inside ofthe window construction to which the invention has been applied. Fig. 2is an enlarged side elevational view of the cooperating window parts andthe sash lock therefor. Fig. 3 is a sectional view taken on the line 3-3of Fig. 2 and in the direction of the arrows.

In the drawings 10 indicates a window casing providing the slides ll'forreceiving the upper and lower Window sashes 12 and 13. In windows of theguillotine type, the upper and lower windows 12 and 13 are slid-ablysupported in parallel planes and are adapted to slide by each other. 'Asshown in Fig. 3 the lower portion of the upper sash frame and theupperportion of the lower sash frame each is beveled and said beveledportions are adapted to engage each othetiand form a,tight joint whenthe windows arein closed position} Uponone side portion ofthe upperwindow sash 1,2-thereis;secured astrap ,l{i,.as by rneansrofthe screws15. This stra p 14 is provided withz centering recess ltiieh saplurality .of sockets or recesses 17 which are inline with each, otherand whichjherein are shown as textending entirely through the strap,thereby permitting the .Strapito be made by ajpunching process. Th6length of the str p 14 ibeasdes efd, the same being determined by the..nun beriof positions in which it ,is-jdesiretl. to lock the win; dowsin opened relation.

Associated with the retaining s rap .14. is a 'latch construction andthis ,is ,shown most clearly in Figs. 2 an'dB- flnsaifdtiguresithe,latch construction 'is shown 35130111 prising a rectangular ilmusingportion d8, which rectangular housing portion is .open uponone face andits opposite iface is irevide'd with an aperture '19. Theapertured facelikewise is provided withan integral projection '20, which projectionextends inwardly into the housingend jformsas pring retainer. Thehousing suitably supports within the sa1ne, -and oppositelthe aperture19, a pivot pin 21,;antl said pivot pin '21 .pivotally supports a bellcrank .lever 22 having an arm portion 23 whic'lrextends through theaperture 19 and terminates in .a suitable jloop 2dadapted to -reeeive=ac ord :or chain 25 carrying a ring 26. [The other tend of the lever 22terniinatesin two transverse wing portions 27 and a projecting "lockingtooth ,28 having a beveled edge 29. Extending from .the tooth 28 is; aprojection '30 which also is beveled, and-extending 11 wardly andoppositely from the beveled tooth 28 is a projection 31 which forms another spring retainer. Intel-posed between the bevel tooth 28 and theapertured face of the housing 18 and surrounding both projections 20 and31 is a coil spring 32 which normally presses the bell crank leveroutwardly from the housing so that the tooth 28 engages the strap 14 andpreferably positions said toothed portion 28 in one of the openings 17.The housing is likewise provided with a flanged base 33 which issuitably apertured to receive securing means 34, herein shown in theform of screws which secures said base, and, therefore, the housing tothe upper portion of the lower sash 13 adjacent the strap 14.

From the foregoing it will be noted that the device consists essentiallyof but the fol lowing; a socket forming, strap, an integral housing, apivot, a spring and a bell crank latch.

The operation of the device is as follows: WVhen the upper sash israised from an open position, the wall of the apertured socket 17engages the beveled edge 29 of the tooth 28 and tilts the pivoted latchin position to the spring 32, and thus the window may be moved upwardlyto close the same. a similar manner the lower window sash may be moveddownwardly and the pivoted latch will again be tilted as the bevelededge 29 engages the successive slot edges. However, when it is desiredto move the upper window sash downwardly or the lower window sashupwardly, the flat edge of the tooth 28 engages the first socket 17 andis seated therein by means of the spring 32 and thus further relativemovement of the two windows is prevented unless the lever is tilted bysuitable means, such as the chain 25 herein shown, whereupon the windowmay be moved to the desired position and therein latched.

It will be noted that with the foregoing construction it is possible,see Fig. 1, to position the upper and lower window sashes in suchrelationship that an opening is provided at the top and bottom of thewindow frame or casing, thereby insuring circulation and also insuringthat further opening movement is impossible, except from within thehouse or from the inside of the window. Any movement of the lower windowupwardly will likewise move the upper window upwardly, and any movementof the upper window downwardly will likewise move the lower windowdownwardly, so that the relative positions of the windows are thusfixed. Should, however, the upper window be moved downwardly from without, or the lower window upwardly from without, the construction is suchthat the window will be locked in the next lowest position etc.Therefore, any tampering with the window will serve to decrease theopening of the window.

The construction is such that the bell crank lever bears upon the strap14 and thus rattling of the window is either prevented or materiallyreduced. Furthermore, the recess 16 serves as a guide to center theupper window with respect to the lower window in the relative movementof the two and this serves to position the strap 14: in line with thetooth 28. The position of the tooth 28 in any one of the sockets 17serves to prevent swaying of the window within a limited range.

Another feature of the invention permits the removal of the usual centersash lock and this provides a clear glass field in the window. Anotherfeature that the latch provides is that the same is self-locking ashereinbefore suggested and thus when the lower window is positioned inits lowermost position and the upper window in its uppermost'position,the latch automatically engages in the lowermost opening 17 andautomatically locks the two windows together.

The invention claimed is:

A sash lock including an enclosing housing having but one open face andan opening in the opposite face, a bell crank lever pivotally supportedtherein by two opposite faces continuous with the before mentioned face,said lever having one end projecting through the opening and theopposite end adapted to extend beyond the housing through the open facethereof and said lever also having an inclined face and an edge forwindow locking purposes on the opposite end, spring means positionableupon within the housing and interposed between the housing and the levernormally forcing said lever locking end outwardly, and a springretaining projection extending inwardly in and integral with saidlocking lever locking end and oppositely extending from the face andedge thereof.

In witness whereof, I have hereunto ailixed my signature.

GEORGE FRANKLIN VAN METER.

